Substituted sulfonamide bioisosteres of 8-hydroxyquinoline as zinc-dependent antibacterial compounds
作者:John E. McGowan、Andrew D. Harper、Emma K. Davison、Joo Young Jeong、Sonya Mros、Nichaela Harbison-Price、Essie M. Van Zuylen、Melanie K. Knottenbelt、Adam Heikal、Scott A. Ferguson、Michelle A. McConnell、Gregory M. Cook、Woravimol Krittaphol、Greg F. Walker、Margaret A. Brimble、David Rennison
DOI:10.1016/j.bmcl.2020.127110
日期:2020.6
the presence of 50 µM ZnSO4. Against S. aureus compounds 9g (MIC 4 µg/mL) and 11d (MIC 8 µg/mL) showed the greatest activity, whereas all compounds were found to be inactive against E. coli (MIC > 256 µg/mL); again in the presence of 50 µM ZnSO4. All compounds were demonstrated to be significantly less active in the absence of supplementary zinc. Compound 9g was subsequently confirmed to be bactericidal
在存在和不存在补充锌的情况下,评估了一系列的8-羟基喹啉取代的磺酰胺类生物等效物对常见乳腺炎病原体乳房链球菌,金黄色葡萄球菌和大肠杆菌的抗菌活性。在存在50 µM ZnSO4的情况下,化合物9a-e,10a-c,11a-e,12和13对乳房链球菌的MIC为0.0625 µg / mL。抗金黄色葡萄球菌的化合物9g(MIC 4 µg / mL)和11d(MIC 8 µg / mL)表现出最大的活性,而所有化合物均对大肠杆菌无活性(MIC> 256 µg / mL)。再次在50 µM ZnSO4存在下。在没有补充锌的情况下,所有化合物的活性均明显降低。随后确认化合物9g具有杀菌作用,MBC(≥3log10cfu / mL降低)为0。在50 µM ZnSO4存在下,针对乳房链球菌为125 µg / mL。为了验证在补充锌的存在下化合物9g的消毒活性,进行了定量悬浮液消毒(消毒剂)测试。在该初步测试中,对于浓度低至1